<?xml version="1.0" ?>
<!--Created by PyChart 1.39 Copyright 1999-2006 Yasushi Saito-->
<svg viewBox="178 -544 620 456" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
  <defs>
    <clipPath id="clip0">
      <path d="M 294 -294 L 294 -526 L 786 -526 L 786 -294 Z"/>
    </clipPath>
    <clipPath id="clip1">
      <path d="M 294 -294 L 294 -526 L 786 -526 L 786 -294 Z"/>
    </clipPath>
    <clipPath id="clip2">
      <path d="M 280 -280 L 280 -540 L 800 -540 L 800 -280 Z"/>
    </clipPath>
    <clipPath id="clip3">
      <path d="M 294 -294 L 294 -526 L 786 -526 L 786 -294 Z"/>
    </clipPath>
    <clipPath id="clip4">
      <path d="M 280 -280 L 280 -540 L 800 -540 L 800 -280 Z"/>
    </clipPath>
    <clipPath id="clip5">
      <path d="M 343.6363636363636 -318.3814890850053 L 337.3863636363636 -328.3814890850053 L 349.8863636363636 -328.3814890850053 Z"/>
    </clipPath>
    <clipPath id="clip6">
      <path d="M 387.27272727272725 -319.53292492413897 L 381.02272727272725 -329.53292492413897 L 393.52272727272725 -329.53292492413897 Z"/>
    </clipPath>
    <clipPath id="clip7">
      <path d="M 430.9090909090909 -320.26042220459175 L 424.6590909090909 -330.26042220459175 L 437.1590909090909 -330.26042220459175 Z"/>
    </clipPath>
    <clipPath id="clip8">
      <path d="M 474.5454545454545 -320.7530978300876 L 468.2954545454545 -330.7530978300876 L 480.7954545454545 -330.7530978300876 Z"/>
    </clipPath>
    <clipPath id="clip9">
      <path d="M 518.1818181818182 -321.32278776081074 L 511.9318181818182 -331.32278776081074 L 524.4318181818182 -331.32278776081074 Z"/>
    </clipPath>
    <clipPath id="clip10">
      <path d="M 561.8181818181818 -321.2624179023908 L 555.5681818181818 -331.2624179023908 L 568.0681818181818 -331.2624179023908 Z"/>
    </clipPath>
    <clipPath id="clip11">
      <path d="M 605.4545454545455 -321.40520026500246 L 599.2045454545455 -331.40520026500246 L 611.7045454545455 -331.40520026500246 Z"/>
    </clipPath>
    <clipPath id="clip12">
      <path d="M 649.090909090909 -321.60754275618956 L 642.840909090909 -331.60754275618956 L 655.340909090909 -331.60754275618956 Z"/>
    </clipPath>
    <clipPath id="clip13">
      <path d="M 692.7272727272727 -322.09715940227215 L 686.4772727272727 -332.09715940227215 L 698.9772727272727 -332.09715940227215 Z"/>
    </clipPath>
    <clipPath id="clip14">
      <path d="M 736.3636363636364 -322.99065130088417 L 730.1136363636364 -332.99065130088417 L 742.6136363636364 -332.99065130088417 Z"/>
    </clipPath>
    <clipPath id="clip15">
      <path d="M 290 -94 L 290 -136 L 423.824 -136 L 423.824 -94 Z"/>
    </clipPath>
    <clipPath id="clip16">
      <path d="M 308.0 -100.33333333333334 L 301.75 -110.33333333333334 L 314.25 -110.33333333333334 Z"/>
    </clipPath>
  </defs>
  <g style="stroke-linejoin:miter;font-size:8;font-family:Helvetica;fill:none;stroke-linecap:butt;stroke:rgb(0,0,0);font-stretch:normal;stroke-dasharray:none;font-weight:normal;font-style:normal;stroke-width:0.5;">
    <path d="M 300 -300 L 780 -300"/>
    <path d="M 300 -300 L 780 -300"/>
    <path d="M 300.0 -300 L 300.0 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,300,-288)" x="300.0" y="-288.0">
      0
    </text>
    <path d="M 343.6363636363636 -300 L 343.6363636363636 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,343.636,-288)" x="343.6363636363636" y="-288.0">
      200
    </text>
    <path d="M 387.27272727272725 -300 L 387.27272727272725 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,387.273,-288)" x="387.27272727272725" y="-288.0">
      400
    </text>
    <path d="M 430.9090909090909 -300 L 430.9090909090909 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,430.909,-288)" x="430.9090909090909" y="-288.0">
      600
    </text>
    <path d="M 474.5454545454545 -300 L 474.5454545454545 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,474.545,-288)" x="474.5454545454545" y="-288.0">
      800
    </text>
    <path d="M 518.1818181818182 -300 L 518.1818181818182 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,518.182,-288)" x="518.1818181818182" y="-288.0">
      1000
    </text>
    <path d="M 561.8181818181818 -300 L 561.8181818181818 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,561.818,-288)" x="561.8181818181818" y="-288.0">
      1200
    </text>
    <path d="M 605.4545454545455 -300 L 605.4545454545455 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,605.455,-288)" x="605.4545454545455" y="-288.0">
      1400
    </text>
    <path d="M 649.090909090909 -300 L 649.090909090909 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,649.091,-288)" x="649.090909090909" y="-288.0">
      1600
    </text>
    <path d="M 692.7272727272727 -300 L 692.7272727272727 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,692.727,-288)" x="692.7272727272727" y="-288.0">
      1800
    </text>
    <path d="M 736.3636363636364 -300 L 736.3636363636364 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,736.364,-288)" x="736.3636363636364" y="-288.0">
      2000
    </text>
    <path d="M 780.0 -300 L 780.0 -288"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" transform="rotate(90,780,-288)" x="780.0" y="-288.0">
      2200
    </text>
    <text style="font-size:16;stroke:none;fill:rgb(0,0,0);" x="524.44" y="-220.0">
      Size
    </text>
    <path d="M 300 -300 L 300 -520"/>
    <path d="M 300 -300.0 L 288 -300.0"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" x="238.0" y="-294.0">
      0.00e+00
    </text>
    <path d="M 300 -344.0 L 288 -344.0"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" x="238.0" y="-338.0">
      4.89e-07
    </text>
    <path d="M 300 -388.0 L 288 -388.0"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" x="238.0" y="-382.0">
      9.78e-07
    </text>
    <path d="M 300 -432.0 L 288 -432.0"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" x="238.0" y="-426.0">
      1.47e-06
    </text>
    <path d="M 300 -476.0 L 288 -476.0"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" x="238.0" y="-470.0">
      1.96e-06
    </text>
    <path d="M 300 -520.0 L 288 -520.0"/>
    <text style="font-size:12;font-style:italic;stroke:none;fill:rgb(0,0,0);" x="238.0" y="-514.0">
      2.45e-06
    </text>
    <text style="font-size:16;stroke:none;fill:rgb(0,0,0);" transform="rotate(-90,200,-340.648)" x="200.0" y="-340.648">
      Average time (sec.)
    </text>
    <g style="clip-path:url(#clip0);">
      <g style="clip-path:url(#clip1);">
        <path d="M 343.6363636363636 -376.7025592370546 L 387.27272727272725 -395.3016039194196 L 430.9090909090909 -413.47554043332815 L 474.5454545454545 -435.62794958409336 L 518.1818181818182 -456.46949608630575 L 561.8181818181818 -470.7081455550739 L 605.4545454545455 -477.6412324251818 L 649.090909090909 -493.6855794475843 L 692.7272727272727 -502.831028193321 L 736.3636363636364 -520.0" style="stroke:rgb(255,68,0);stroke-width:2;"/>
      </g>
      <g style="clip-path:url(#clip2);">
        <path d="M 338.6363636363636 -371.7025592370546 L 348.6363636363636 -381.7025592370546" style="stroke-width:1;"/>
        <path d="M 348.6363636363636 -371.7025592370546 L 338.6363636363636 -381.7025592370546" style="stroke-width:1;"/>
        <path d="M 343.6363636363636 -369.6325592370546 L 343.6363636363636 -383.77255923705457" style="stroke-width:1;"/>
        <path d="M 336.56636363636363 -376.7025592370546 L 350.7063636363636 -376.7025592370546" style="stroke-width:1;"/>
        <path d="M 382.27272727272725 -390.3016039194196 L 392.27272727272725 -400.3016039194196" style="stroke-width:1;"/>
        <path d="M 392.27272727272725 -390.3016039194196 L 382.27272727272725 -400.3016039194196" style="stroke-width:1;"/>
        <path d="M 387.27272727272725 -388.2316039194196 L 387.27272727272725 -402.3716039194196" style="stroke-width:1;"/>
        <path d="M 380.20272727272726 -395.3016039194196 L 394.34272727272725 -395.3016039194196" style="stroke-width:1;"/>
        <path d="M 425.9090909090909 -408.47554043332815 L 435.9090909090909 -418.47554043332815" style="stroke-width:1;"/>
        <path d="M 435.9090909090909 -408.47554043332815 L 425.9090909090909 -418.47554043332815" style="stroke-width:1;"/>
        <path d="M 430.9090909090909 -406.40554043332816 L 430.9090909090909 -420.54554043332814" style="stroke-width:1;"/>
        <path d="M 423.83909090909094 -413.47554043332815 L 437.9790909090909 -413.47554043332815" style="stroke-width:1;"/>
        <path d="M 469.5454545454545 -430.62794958409336 L 479.5454545454545 -440.62794958409336" style="stroke-width:1;"/>
        <path d="M 479.5454545454545 -430.62794958409336 L 469.5454545454545 -440.62794958409336" style="stroke-width:1;"/>
        <path d="M 474.5454545454545 -428.5579495840933 L 474.5454545454545 -442.6979495840933" style="stroke-width:1;"/>
        <path d="M 467.47545454545457 -435.62794958409336 L 481.61545454545455 -435.62794958409336" style="stroke-width:1;"/>
        <path d="M 513.1818181818182 -451.46949608630575 L 523.1818181818182 -461.46949608630575" style="stroke-width:1;"/>
        <path d="M 523.1818181818182 -451.46949608630575 L 513.1818181818182 -461.46949608630575" style="stroke-width:1;"/>
        <path d="M 518.1818181818182 -449.39949608630576 L 518.1818181818182 -463.53949608630575" style="stroke-width:1;"/>
        <path d="M 511.1118181818182 -456.46949608630575 L 525.2518181818182 -456.46949608630575" style="stroke-width:1;"/>
        <path d="M 556.8181818181818 -465.7081455550739 L 566.8181818181818 -475.7081455550739" style="stroke-width:1;"/>
        <path d="M 566.8181818181818 -465.7081455550739 L 556.8181818181818 -475.7081455550739" style="stroke-width:1;"/>
        <path d="M 561.8181818181818 -463.6381455550739 L 561.8181818181818 -477.7781455550739" style="stroke-width:1;"/>
        <path d="M 554.7481818181818 -470.7081455550739 L 568.8881818181818 -470.7081455550739" style="stroke-width:1;"/>
        <path d="M 600.4545454545455 -472.6412324251818 L 610.4545454545455 -482.6412324251818" style="stroke-width:1;"/>
        <path d="M 610.4545454545455 -472.6412324251818 L 600.4545454545455 -482.6412324251818" style="stroke-width:1;"/>
        <path d="M 605.4545454545455 -470.57123242518173 L 605.4545454545455 -484.7112324251817" style="stroke-width:1;"/>
        <path d="M 598.3845454545454 -477.6412324251818 L 612.5245454545454 -477.6412324251818" style="stroke-width:1;"/>
        <path d="M 644.090909090909 -488.6855794475843 L 654.090909090909 -498.6855794475843" style="stroke-width:1;"/>
        <path d="M 654.090909090909 -488.6855794475843 L 644.090909090909 -498.6855794475843" style="stroke-width:1;"/>
        <path d="M 649.090909090909 -486.6155794475843 L 649.090909090909 -500.7555794475843" style="stroke-width:1;"/>
        <path d="M 642.0209090909091 -493.6855794475843 L 656.1609090909091 -493.6855794475843" style="stroke-width:1;"/>
        <path d="M 687.7272727272727 -497.831028193321 L 697.7272727272727 -507.831028193321" style="stroke-width:1;"/>
        <path d="M 697.7272727272727 -497.831028193321 L 687.7272727272727 -507.831028193321" style="stroke-width:1;"/>
        <path d="M 692.7272727272727 -495.76102819332095 L 692.7272727272727 -509.90102819332094" style="stroke-width:1;"/>
        <path d="M 685.6572727272728 -502.831028193321 L 699.7972727272727 -502.831028193321" style="stroke-width:1;"/>
        <path d="M 731.3636363636364 -515.0 L 741.3636363636364 -525.0" style="stroke-width:1;"/>
        <path d="M 741.3636363636364 -515.0 L 731.3636363636364 -525.0" style="stroke-width:1;"/>
        <path d="M 736.3636363636364 -512.9300000000001 L 736.3636363636364 -527.0699999999999" style="stroke-width:1;"/>
        <path d="M 729.2936363636363 -520.0 L 743.4336363636364 -520.0" style="stroke-width:1;"/>
      </g>
      <g style="clip-path:url(#clip3);">
        <path d="M 343.6363636363636 -323.3814890850053 L 387.27272727272725 -324.53292492413897 L 430.9090909090909 -325.26042220459175 L 474.5454545454545 -325.7530978300876 L 518.1818181818182 -326.32278776081074 L 561.8181818181818 -326.2624179023908 L 605.4545454545455 -326.40520026500246 L 649.090909090909 -326.60754275618956 L 692.7272727272727 -327.09715940227215 L 736.3636363636364 -327.99065130088417" style="stroke:rgb(126,126,126);stroke-width:0.4;stroke-dasharray:1.5,1.5;"/>
      </g>
      <g style="clip-path:url(#clip4);">
        <g style="fill:rgb(0,0,0);clip-path:url(#clip5);">
          <path d="M 337.3863636363636 -318.3814890850053 L 337.3863636363636 -328.3814890850053 L 349.8863636363636 -328.3814890850053 L 349.8863636363636 -318.3814890850053 Z" style="stroke:none;"/>
        </g>
        <g>
          <path d="M 343.6363636363636 -318.3814890850053 L 337.3863636363636 -328.3814890850053 L 349.8863636363636 -328.3814890850053 Z"/>
          <g style="fill:rgb(0,0,0);clip-path:url(#clip6);">
            <path d="M 381.02272727272725 -319.53292492413897 L 381.02272727272725 -329.53292492413897 L 393.52272727272725 -329.53292492413897 L 393.52272727272725 -319.53292492413897 Z" style="stroke:none;"/>
          </g>
          <g>
            <path d="M 387.27272727272725 -319.53292492413897 L 381.02272727272725 -329.53292492413897 L 393.52272727272725 -329.53292492413897 Z"/>
            <g style="fill:rgb(0,0,0);clip-path:url(#clip7);">
              <path d="M 424.6590909090909 -320.26042220459175 L 424.6590909090909 -330.26042220459175 L 437.1590909090909 -330.26042220459175 L 437.1590909090909 -320.26042220459175 Z" style="stroke:none;"/>
            </g>
            <g>
              <path d="M 430.9090909090909 -320.26042220459175 L 424.6590909090909 -330.26042220459175 L 437.1590909090909 -330.26042220459175 Z"/>
              <g style="fill:rgb(0,0,0);clip-path:url(#clip8);">
                <path d="M 468.2954545454545 -320.7530978300876 L 468.2954545454545 -330.7530978300876 L 480.7954545454545 -330.7530978300876 L 480.7954545454545 -320.7530978300876 Z" style="stroke:none;"/>
              </g>
              <g>
                <path d="M 474.5454545454545 -320.7530978300876 L 468.2954545454545 -330.7530978300876 L 480.7954545454545 -330.7530978300876 Z"/>
                <g style="fill:rgb(0,0,0);clip-path:url(#clip9);">
                  <path d="M 511.9318181818182 -321.32278776081074 L 511.9318181818182 -331.32278776081074 L 524.4318181818182 -331.32278776081074 L 524.4318181818182 -321.32278776081074 Z" style="stroke:none;"/>
                </g>
                <g>
                  <path d="M 518.1818181818182 -321.32278776081074 L 511.9318181818182 -331.32278776081074 L 524.4318181818182 -331.32278776081074 Z"/>
                  <g style="fill:rgb(0,0,0);clip-path:url(#clip10);">
                    <path d="M 555.5681818181818 -321.2624179023908 L 555.5681818181818 -331.2624179023908 L 568.0681818181818 -331.2624179023908 L 568.0681818181818 -321.2624179023908 Z" style="stroke:none;"/>
                  </g>
                  <g>
                    <path d="M 561.8181818181818 -321.2624179023908 L 555.5681818181818 -331.2624179023908 L 568.0681818181818 -331.2624179023908 Z"/>
                    <g style="fill:rgb(0,0,0);clip-path:url(#clip11);">
                      <path d="M 599.2045454545455 -321.40520026500246 L 599.2045454545455 -331.40520026500246 L 611.7045454545455 -331.40520026500246 L 611.7045454545455 -321.40520026500246 Z" style="stroke:none;"/>
                    </g>
                    <g>
                      <path d="M 605.4545454545455 -321.40520026500246 L 599.2045454545455 -331.40520026500246 L 611.7045454545455 -331.40520026500246 Z"/>
                      <g style="fill:rgb(0,0,0);clip-path:url(#clip12);">
                        <path d="M 642.840909090909 -321.60754275618956 L 642.840909090909 -331.60754275618956 L 655.340909090909 -331.60754275618956 L 655.340909090909 -321.60754275618956 Z" style="stroke:none;"/>
                      </g>
                      <g>
                        <path d="M 649.090909090909 -321.60754275618956 L 642.840909090909 -331.60754275618956 L 655.340909090909 -331.60754275618956 Z"/>
                        <g style="fill:rgb(0,0,0);clip-path:url(#clip13);">
                          <path d="M 686.4772727272727 -322.09715940227215 L 686.4772727272727 -332.09715940227215 L 698.9772727272727 -332.09715940227215 L 698.9772727272727 -322.09715940227215 Z" style="stroke:none;"/>
                        </g>
                        <g>
                          <path d="M 692.7272727272727 -322.09715940227215 L 686.4772727272727 -332.09715940227215 L 698.9772727272727 -332.09715940227215 Z"/>
                          <g style="fill:rgb(0,0,0);clip-path:url(#clip14);">
                            <path d="M 730.1136363636364 -322.99065130088417 L 730.1136363636364 -332.99065130088417 L 742.6136363636364 -332.99065130088417 L 742.6136363636364 -322.99065130088417 Z" style="stroke:none;"/>
                          </g>
                          <g>
                            <path d="M 736.3636363636364 -322.99065130088417 L 730.1136363636364 -332.99065130088417 L 742.6136363636364 -332.99065130088417 Z"/>
                          </g>
                        </g>
                      </g>
                    </g>
                  </g>
                </g>
              </g>
            </g>
          </g>
        </g>
      </g>
    </g>
    <g style="fill:rgb(255,255,255);clip-path:url(#clip15);">
      <path d="M 290 -94 L 290 -136 L 423.824 -136 L 423.824 -94 Z" style="stroke:none;"/>
    </g>
    <path d="M 300 -125.33333333333334 L 316 -125.33333333333334" style="stroke:rgb(255,68,0);stroke-width:2;"/>
    <path d="M 303.0 -120.33333333333334 L 313.0 -130.33333333333334" style="stroke-width:1;"/>
    <path d="M 313.0 -120.33333333333334 L 303.0 -130.33333333333334" style="stroke-width:1;"/>
    <path d="M 308.0 -118.26333333333335 L 308.0 -132.40333333333334" style="stroke-width:1;"/>
    <path d="M 300.93 -125.33333333333334 L 315.07 -125.33333333333334" style="stroke-width:1;"/>
    <text style="font-size:16;stroke:none;fill:rgb(0,0,0);" x="316.0" y="-120.0">
      ov_tree_map
    </text>
    <path d="M 300 -105.33333333333334 L 316 -105.33333333333334" style="stroke:rgb(126,126,126);stroke-width:0.4;stroke-dasharray:1.5,1.5;"/>
    <g style="fill:rgb(0,0,0);clip-path:url(#clip16);">
      <path d="M 301.75 -100.33333333333334 L 301.75 -110.33333333333334 L 314.25 -110.33333333333334 L 314.25 -100.33333333333334 Z" style="stroke:none;"/>
    </g>
    <g>
      <path d="M 308.0 -100.33333333333334 L 301.75 -110.33333333333334 L 314.25 -110.33333333333334 Z"/>
      <text style="font-size:16;stroke:none;fill:rgb(0,0,0);" x="316.0" y="-100.0">
        n_map
      </text>
    </g>
  </g>
</svg>
